If you have a diesel engine and want a synthetic oil option, look no further than Shell’s Rotella. Compared to a conventional 15W-30, this product can improve fuel economy by up to 2.8% ...

Last week we explained the basics of motor oil, from viscosity to additives and everything in between. Now it’s time t ...

Modern cars require a lot of different fluids. Most people know about engine oil. However, many people may not realize that ...

Using the wrong oil for your engine can cause premature ... If you're using a synthetic blend, which is a mixture of conventional and synthetic oils, you should change it every 5,000 to 7,000 ...

Pennzoil produces a range of conventional motor oils, synthetic blends ... a more eco-friendly blend that comprises one-quarter of sustainably sourced plant-based oil in a fully synthetic motor ...

If the engine is labeled for synthetic and it’s listed as such in the owner’s manual, moving to conventional oil may risk your coverage in the event of major engine failure. Carmakers can ...